A battery fixing and strengthening structure based on adhesive

Abstract

The present invention discloses a battery fixing and strengthening structure based on adhesive, comprising: a battery mounting bracket, on which a bus is mounted; batteries, arranged on the battery mounting bracket, connected in series or in parallel through the bus; adhesive, distributed in point, line and / or surface form between adjacent batteries, between batteries and the battery mounting bracket, between the battery mounting bracket and the bus, or between batteries and the bus. Through the above manner, the battery fixing and strengthening structure based on adhesive described in the present invention, in particular, uses adhesive to strengthen the connection and fixing structure during battery assembly, and by optimizing the distribution point of the adhesive, it can not only facilitate the construction of the adhesive and save the amount of adhesive, but also improve the seismic effect, ensure the connection between the battery electrode and the bus and the reliability of the fixation between the battery and the battery mounting bracket, so that the change of the charging and discharging electric channel after assembly is minimized, and the performance is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of battery assembly, and in particular to a battery fixing and reinforcing structure based on an adhesive. Background Art

[0002] In order to increase the amount of electricity stored, batteries need to be assembled into battery packs or battery groups so that several batteries can work together. For example, Tesla electric cars use thousands of standard cylindrical lithium batteries to provide power for the entire vehicle, allowing it to accelerate from 0 to 100 km / h in 3.2 seconds, which is very superior.

[0003] Due to the large number of batteries, if the electrical connection is achieved by bonding, the stability of the connection between the battery and the bus on the bracket will be challenged. In existing battery packs, the battery is usually fixed using a dedicated bracket, and the battery electrode and the bus on the bracket are fixed by welding or conductive glue. The connection point is relatively fragile, the earthquake resistance is poor, and it is easy to disconnect, affecting the stability of the power supply system. The structural method of bonding is particularly obvious and needs to be strengthened. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a battery fixing and reinforcing structure based on an adhesive, so as to enhance the fixing effect of the battery and improve the connection reliability between the battery electrode and the busbar.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a battery fixing and strengthening structure based on an adhesive, comprising:

[0006] A battery mounting bracket, wherein a busbar is mounted on the battery mounting bracket;

[0007] Batteries are arranged on a battery mounting bracket and connected in series or in parallel via a busbar;

[0008] The adhesive is distributed in point, line or surface form between adjacent batteries, between batteries and battery mounting brackets, between battery mounting brackets and bus bars and / or between batteries and bus bars, to perform one-to-one or one-to-many structural connection and reinforcement between batteries and batteries, batteries and battery mounting brackets, batteries and bus bars, and battery mounting brackets and bus bars, thereby achieving reinforcement and no relative position change between two or three of the batteries, bus bars and battery mounting brackets.

[0009] In a preferred embodiment of the present invention, the electrodes of the battery are electrically connected to the busbar by welding or conductive adhesive.

[0010] In a preferred embodiment of the present invention, the adhesive is distributed in a dot-shaped, surface-shaped or annular-line shape between the battery electrode and the bus bar or between the electrode and the battery mounting bracket.

[0011] In a preferred embodiment of the present invention, the point-shaped, surface-shaped or annular line-shaped adhesive is symmetrical with the electrical connection point between the battery electrode and the bus as the center, and the stress is evenly distributed. When the bus is located between the battery electrode and the battery mounting bracket, the adhesive is distributed between the battery electrode and the battery mounting bracket, so as to clamp and fix the bus.

[0012] In a preferred embodiment of the present invention, the battery mounting bracket is provided with a positioning groove corresponding to the battery, and the adhesive is distributed on the bottom or side wall of the positioning groove, so that a fully stable and fixed connection between the battery, the battery mounting bracket and the bus is achieved through the adhesive.

[0013] In a preferred embodiment of the present invention, a plurality of through holes are provided on the back of the battery mounting bracket, and the through holes are located below or above two adjacent batteries. The adhesive is located in the through holes and contacts the two adjacent batteries through the through holes. After curing, the spacing between the adjacent batteries is locked, thereby achieving relative position fixation of the adjacent batteries and relative fixation of the adjacent batteries to the battery mounting bracket and the bus.

[0014] In a preferred embodiment of the present invention, the busbar is arranged on a side of the battery mounting bracket close to the battery or a side behind the battery, and the busbar is provided with glue dispensing process holes corresponding to the through holes.

[0015] In a preferred embodiment of the present invention, the adhesive is a structural adhesive, and the structural adhesive includes but is not limited to light-curing, moisture-curing, heat-free and below 60 degrees Celsius fast-fixing structural adhesives.

[0016] In a preferred embodiment of the present invention, the line shape includes a straight line shape, an arc line shape or a closed annular line shape.

[0017] The beneficial effects of the present invention are as follows: the adhesive-based battery fixing reinforcement structure pointed out in the present invention particularly adopts the adhesive to strengthen and quickly fix the connection fixing structure during battery assembly, and by optimizing the distribution points of the adhesive, it is convenient for the construction of the adhesive and saves the amount of adhesive, and can also improve the seismic effect, and can also ensure the seismic effect in all directions, ensure the connection between the battery electrode and the bus bar and the reliability of the fixation of the battery and the battery mounting bracket, so that the changes in the charging and discharging electric channels after assembly are minimized and the performance is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 It is a structural schematic diagram of a preferred embodiment of a battery fixing and reinforcing structure based on an adhesive according to the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the binder distribution in the

[0021] Figure 3 It is a structural schematic diagram of another preferred embodiment of the adhesive distribution in an adhesive-based battery fixing reinforcement structure of the present invention;

[0022] Figure 4 It is a structural schematic diagram of another preferred embodiment of the adhesive distribution in the adhesive-based battery fixing reinforcement structure of the present invention;

[0023] Figure 5 It is a structural schematic diagram of another preferred embodiment of the adhesive distribution in the adhesive-based battery fixing reinforcement structure of the present invention. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1~Figure 5 , the embodiment of the present invention includes:

[0026] A battery fixing and reinforcement structure based on adhesive comprises: a battery mounting bracket 2, a battery 1 and an adhesive 5, wherein a bus 3 is mounted on the battery mounting bracket 2, and the batteries are arranged and combined on the battery mounting bracket 2 and connected in series or in parallel via the bus 3 to form a battery pack.

[0027] The electrodes of the battery 1 are electrically connected to the busbar 3 by welding or conductive glue 8. In this case, the adhesive 5 is used, which has a good structural reinforcement effect, especially for electrical connections with weak conductive connection reliability.

[0028] The adhesive 5 is distributed in point, line or surface shape between adjacent batteries 1, between batteries 1 and battery mounting bracket 2, between busbar 3 and battery mounting bracket 2 and / or between batteries 1 and busbar 3, and performs one-to-one or one-to-many structural connection and reinforcement between batteries 1 and batteries, batteries 1 and battery mounting bracket 2, batteries 1 and busbar 3, and battery mounting bracket 2 and busbar 3, so that there is no relative position change between the reinforced batteries 1, busbar 3 and battery mounting bracket 2. The adhesive adopts structural adhesive, which has high structural stability, can withstand large loads, is resistant to aging, and has a long service life.

[0029] Embodiment 1:

[0030] like Figure 1~Figure 2 As shown, the back of the battery mounting bracket 2 is provided with a plurality of through holes 7, and the through holes 7 are located below or above two adjacent batteries 1 ( Figure 2 The through hole 7 shown is located below between two adjacent batteries 1 ), and the adhesive 5 is located in the through hole 7 and contacts the two adjacent batteries through the through hole 7 , thereby achieving bonding between the two adjacent batteries and the battery mounting bracket 2 .

[0031] The busbar 3 is arranged on the side of the battery mounting bracket 2 close to the battery or on the side behind the battery ( Figure 2 The bus bar 3 shown is arranged on the back side of the battery mounting bracket 2), and the bus bar 3 is provided with a dispensing process hole 6 corresponding to the through hole 7, so as to facilitate the injection of the adhesive 5, and utilize the adhesive 5 to strengthen the connection between the bus bar 3 and the battery mounting bracket 2.

[0032] Embodiment 2:

[0033] like Figure 3 As shown, the adhesive 5 is distributed in a point-shaped, surface-shaped or annular line-shaped manner between the electrode of the battery 1 and the bus 3. The point-shaped or annular line-shaped adhesive 5 is symmetrical with the electrical connection point between the battery electrode and the bus as the center. Two point-shaped adhesives 5 can be set, symmetrically distributed on both sides of the conductive glue 8, or one annular line-shaped adhesive 5 can be set, concentrically distributed on the outside of the conductive glue 8, which greatly improves the reliability of the conductive glue 8.

[0034] Embodiment 3:

[0035] The battery mounting bracket 2 is provided with a positioning groove 4 corresponding to the battery 1 to facilitate the insertion of the end of the battery 1. The adhesive 5 is distributed on the bottom or side wall of the positioning groove 4. Figure 4 As shown, the adhesive 5 is distributed on the side wall of the positioning groove 4 and contacts the outer circle of the battery 1, thereby enhancing the stability of the battery 1 in the positioning groove 4 and achieving good anti-vibration effect.

[0036] Embodiment 4:

[0037] like Figure 5 As shown, the adhesive 5 is distributed in dots between adjacent batteries 1 , and the bottom of the adhesive 5 can be fixed by contacting the top surface of the busbar 3 or the top of the positioning groove 4 , thereby strengthening the connection between adjacent batteries 1 and between the battery 1 and the busbar 3 or the positioning groove 4 .

[0038] The structural adhesive used in the adhesive 5 includes but is not limited to light-curing, moisture-curing, heat-free and below 60 degrees Celsius fast-fixing structural adhesives, which can achieve instant drying of the adhesive 5, more efficient assembly, and cold curing to reduce energy consumption and reduce adverse effects on the battery.

[0039] In summary, the adhesive-based battery fixing and reinforcement structure pointed out in the present invention strengthens the fixation of the battery through the reasonable distribution of the adhesive, has good anti-vibration effect, improves the connection reliability between the battery electrode and the bus, is easy to process, and has a wide range of applications.

[0040] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery fixing and strengthening structure based on an adhesive, characterized in that: include: A battery mounting bracket, wherein a busbar is mounted on the battery mounting bracket; Batteries are arranged on a battery mounting bracket and connected in series or in parallel via a bus bar, and the electrodes of the batteries are electrically connected to the bus bar using a conductive adhesive; The back of the battery mounting bracket is provided with a plurality of through holes, and the through holes are located below or above two adjacent batteries; The adhesive is located in the through hole, and is distributed in a point-shaped, line-shaped or surface-shaped manner between adjacent batteries, between batteries and battery mounting brackets, between battery mounting brackets and bus bars, and between batteries and bus bars through the through hole. The adhesive is distributed in a point-shaped, surface-shaped or ring-shaped linear manner between the electrodes of the battery and the bus bars, or between the electrodes and the battery mounting brackets. The point-shaped, surface-shaped or ring-shaped linear adhesive is symmetrical with the electrical connection point between the electrodes of the battery and the bus bars as the center, and the stress is evenly distributed. The one-to-one or one-to-many structural connection and reinforcement of the batteries and the batteries, the batteries and the battery mounting brackets, the batteries and the bus bars, and the battery mounting brackets and the bus bars are achieved. The reinforcement and no relative position change between the batteries, the bus bars, or the batteries and the bus bars, and the battery mounting brackets are realized; The busbar is provided with glue dispensing process holes corresponding to the through holes.

2. The adhesive-based battery fixing and reinforcing structure according to claim 1, characterized in that: The battery mounting bracket is provided with a positioning groove corresponding to the battery, and the adhesive is distributed on the bottom or side wall of the positioning groove.

3. The adhesive-based battery fixing and reinforcement structure according to claim 1, characterized in that: The busbar is arranged on a side of the battery mounting bracket close to the battery or on a side behind the battery.

4. The adhesive-based battery fixing and reinforcing structure according to claim 3, characterized in that: The adhesive is a structural adhesive, and the structural adhesive includes a light-curing structural adhesive.

5. The adhesive-based battery fixing and reinforcing structure according to claim 1, characterized in that: The line shape includes a straight line shape, an arc line shape or a closed ring line shape.

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